TeamCity Plugin Question

I am working with the TeamCity Red Gate plugin and have some questions.

1. I do not see an entry on the GUI portion of the screen to specify the location of migration scripts like you have when setting up Source Control. Does the plugin automatically determine where migration scripts are located, or does that need to be added as a command-line option?

2. The plugin automatically updates the target DB and then packages the resulting scripts in a Nuget Package. I would rather have a two-step process where I create the script, store it as a Nuget Package, and then deploy from TeamCity's Nuget Repository. Is that supported by the command-line options?

3. Does the Deployment Manager section work with TeamCity's Nuget repository? If so, can you send me some info on setting up the Deployment Manager section to work with TeamCity?